Search  for anything...
ASRock

ASRock B550M-ITX/AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors motherboard Mini ITX

  • Based on 824 reviews
Condition: New
Checking for the best price...
$188.18 Why this price?

Buy Now, Pay Later

As low as $31.36 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 4 left in stock, order soon!
Fulfilled by MemoryC
Arrives Aug 9 – Aug 12
Order within 5 hours and 23 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Style: Motherboard


Features

  • Supports AMD AM4 Socket Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors but not compatible with AMD Athlon Processors
  • Supports DDR4 4733+ (OC)
  • Graphics Output: DisplayPort, HDMI
  • 7.1 CH HD Audio (Realtek ALC887 Audio Codec)

Description

Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well. Operating System Microsoft Windows 10 64-bit.

Brand: ASRock


CPU Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD Ryzen 5000/4000/3000 Series


Chipset Type: AMD B550


Memory Clock Speed: 2400 MHz


Platform: Windows 10, Windows 11


Model Name: B550M-ITX/AC


CPU Model: 5X86


Processor Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD Ryzen 5000/4000/3000 Series


Chipset Type: AMD B550


Memory Clock Speed: 2400 MHz


Platform: Windows 10, Windows 11


CPU Model: 5X86


Memory Storage Capacity: 64 GB


Ram Memory Maximum Size: 64 GB


Main Power Connector Type: 24-Pin


Graphics Card Interface: AGP


Memory Slots Available: 2


Number of Ports: 11


S/PDIF Connector Type: Optical


System Bus Standard Supported: SATA 3


Total SATA Ports: 4


USB 2.0: 1


Total Usb Ports: 10


Number of Ethernet Ports: 1


Total Number of HDMI Ports: 1


Total PCIe Ports: 1


Brand: ASRock


Model Name: B550M-ITX/AC


Model Number: B550M-ITX/AC


Manufacturer: ASRock


Global Trade Identification Number: 27


Mfr Part Number: B550M-ITX/AC


Item Weight: 425 Grams


Warranty Description: 3 years


Item Dimensions L x W x H: 5.8"L x 2.5"W x 11"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 9 – Aug 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great AM4 motherboard for ITX/SFF builds Great AM4 motherboard for ITX/SFF builds
Style: Motherboard
Review Image by TheGerleys
Review Image by TheGerleys
Review Image by TheGerleys
Review Image by TheGerleys
Review Image by TheGerleys
I’ve bought this motherboard more than any other motherboard in my life, and I’ve bought many. It’s all you need for AM4 ITX/SFF builds. Easy to use. Runs stable with XMP/EXPO memory overclock. Came with the latest BIOS installed. I used a Ryzen 5600X and RTX 5070 with this motherboard. Ethernet, Wifi, and Bluetooth work right out of the box. ... show more
Reviewed in the United States on March 31, 2026 Reviewed in the United States on March 31, 2026 by TheGerleys
    • Hasn't let me down great for modest gaming.
Style: Motherboard
Before you start building I'd recommend swapping out wifi card with a ax211 or better. I put a ryzen 5 3600 in it, dual ddr4 16gb 3200mhz ram kit in it (32gb total). 500w psu, and a old 3060ti I had laying around in SFF case with handle. CPU and motherboard temp are close in temperature. So if gaming and CPU is around 63c motherboard would be displaying a temp of something like 58c. I'm only mentioning this cause people are saying the thermal plate for motherboard is too small. If you put something crazy on this board like a 4080 with a 5950x 16 core CPU, and 4000+mhz ddr4 ram. I can't say for sure, but I have no doubt that plate would be a problem. Keep in mind this is a budget board, and you shouldn't expect miracles. That being said me and my stepson played WWE 2k24 for hooooouuurrss multiple times on it so far. No issue at all. First time buying a ASRock board as well and the bios and ASRock apps seem kinda crude and dated compared to MSI or ROG, but definitely has everything you need to modify bios, fan speed, rgb etc. I kinda like it. I'm real happy with purchase. ... show more
Reviewed in the United States on March 12, 2024 by Ortron
    • great affordable small form factor motherboard great affordable small form factor motherboard
Style: Motherboard
Review Image by Johnny Rage
*B550 works with PBO on x3d processors *ARGB connectors *wifi *cheap *ASRock has really earned my respect lately great build quality, I build a SFF in the Fractal Ridge with a 5700X3d, 32gb ddr4, RX6750XT. Overall motherboard handled it all very well. did exactly what I needed it to do. It did require a bios update to get PBO on the X3d but that is normal, it was released after the product was made. ... show more
Reviewed in the United States on July 22, 2024 Reviewed in the United States on July 22, 2024 by Johnny Rage
    • Bad shipping and handling by Amazon/ASRock Bad shipping and handling by Amazon/ASRock
Style: Motherboard
Review Image by ANH NGUYEN
Review Image by ANH NGUYEN
This is not reviewing the product itself because I never received the product. Waited 2 weeks for a new B550i from ASRock themselves but received a used Asus A320i instead. I was able to return but this was such a disappointment.
Reviewed in the United States on May 4, 2026 Reviewed in the United States on May 4, 2026 by ANH NGUYEN
    • Good BIOS menu and function, experienced blue screen due to BIOS
Style: Motherboard
Used this board for a mini ITX build. I think the board is well built, includes the most important headers (no USB C header for case sadly) and has a good BIOS menu with plenty of settings to use XMP and other options. My Ryzen 5 5600x worked out of box and did not require a BIOS update. This board was 100% functional for the first 3 months I had it, then I started to experience blue screens that I could not solve. Finally, after a couple days and a few hours, I figured out that it was a BIOS issue and when I updated the BIOS and cleaned my PC, it worked fine again. I like the board, I think it has exceptional value in a budget board. I hope it continues to work into the future. ... show more
Reviewed in the United States on July 30, 2024 by bart
    • Great AM4 B550 Mobo
Style: Motherboard
Great cheap mini itx for for am4. Only problem with this is am4 is getting old but that's nothing to do with the product itself. Its easy to build on its small with a basic layout. Can fit inside of most mini itx cases you want and my bios came preupdated.
Reviewed in the United States on January 10, 2026 by nick J.
    • Working great with a Ryzen 5 5500
Style: Motherboard
It's a very nice budget motherboard. The 8 power phase design do help keep it running at normal temperatures. I did not need to update the firmware to run this CPU. I like that the motherboard supports the "Resizable BAR" GPU memory feature. When installing Windows 10 (final 22H2 release), I noticed the OS immediately downloaded the Realtek Audio Console App for me. It was nice not to have to worry about this. The motherboard is set to fast boot, but this can be changed in the BIOS settings should you need to train the motherboard with your RAM. Not much to say other than it was easy to setup and I am happy with the results. ... show more
Reviewed in the United States on February 5, 2026 by Restful Cargo
    • Needs BIOS update for Ryzen 5 5600x processor Needs BIOS update for Ryzen 5 5600x processor
Style: Motherboard
Review Image by Mr. A
Worked great after that. Nice, Simple little board! I had to flash it with a 3600 or 3700 processor. Takes about 5 min to flash, wireless worked decent. BIOS menus are clean, no frills. Keep in mind it takes about a minute 1st boot to post with new cpu. If you don't get video after a minute, its not coming up. With good BIOS+CPU powers up in that time. MB Does NOT have USB-C "flat" double edge connector female mount. ... show more
Reviewed in the United States on April 5, 2021 Reviewed in the United States on April 5, 2021 by Mr. A

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...